Which coins are layer 3?
Could you please elaborate on what you mean by "layer 3" coins in the context of cryptocurrency? Are you referring to a specific type of blockchain architecture or a particular feature that these coins possess? It's important to note that the term "layer 3" is not a widely recognized classification in the cryptocurrency space. However, if we assume you're referring to a hypothetical categorization based on certain characteristics or functionalities, it would be helpful to know the criteria used to define these "layer 3" coins. Without that information, it's difficult to provide an accurate description of which coins might fall into this category.